Apparatus for reheating molten steel in ladles
US4347400A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1980 |
| Grant date | Aug 31, 1982 |
| Priority date | — |
| Expiry date | Oct 7, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B7/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for reheating molten steel in a ladle under a shielded gaseous atmosphere comprises a vertically movable electrode housing, a lower portion of which extends through a tight passage formed in the ladle cover or in the cover of a ladle-containing vessel. This passage comprises a hollow water-cooled jacket or belt assembly surrounding the housing and provided with recesses for scraper rings and a packing and connected, through a flexible and vacuum-tight coupling, to a flanged collar rigid with the cover. Stacked refractory rings of insulating material are interposed between the belt and the flanged collar. The packing may be replaced by an inflated flexible tubular torus. A conduit is provided for supplying lubricant to the surfaces in mutual sliding contact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.